ASME B18.2.2 Hex Flange Nuts

ASME B18.2.2 Hex Flange Nuts

Dimensions of Hex Flange Nuts

Nominial Size Basic Major Diameter of Thread Width Across Flats, F Width Across Corners, G Diameter Flange, B Nut Thickness, H Maximum Wrenching Length, J Maximum Flange Thickness, K Maximum Runout of Bearing Surface to Thread Axis, FLM
Min. Max. Min. Max. Min. Max. Min. Max.
No.6 0.1380 0.302 0.312 0.342 0.361 0.406 0.422 0.156 0.171 0.10 0.02 0.014
8 0.1640 0.334 0.344 0.381 0.397 0.452 0.469 0.187 0.203 0.13 0.02 0.016
10 0.1900 0.365 0.375 0.416 0.433 0.480 0.500 0.203 0.219 0.13 0.03 0.017
12 0.2160 0.428 0.438 0.488 0.505 0.574 0.594 0.222 0.236 0.14 0.04 0.020
1/4 0.2500 0.428 0.438 0.488 0.505 0.574 0.594 0.222 0.236 0.14 0.04 0.020
5/16 0.3125 0.489 0.500 0.557 0.577 0.660 0.680 0.268 0.283 0.17 0.04 0.023
3/8 0.3750 0.551 0.562 0.628 0.650 0.728 0.750 0.330 0.347 0.23 0.04 0.025
7/16 0.4375 0.675 0.688 0.768 0.794 0.910 0.937 0.375 0.395 0.26 0.04 0.032
1/2 0.5000 0.736 0.750 0.840 0.866 1.000 1.031 0.437 0.458 0.31 0.05 0.035
9/16 0.5625 0.861 0.875 0.982 1.010 1.155 1.188 0.483 0.506 0.35 0.05 0.040
5/8 0.6250 0.922 0.938 1.051 1.083 1.248 1.281 0.545 0.569 0.40 0.05 0.044
3/4 0.7500 1.088 1.125 1.240 1.299 1.460 1.500 0.627 0.675 0.46 0.06 0.051